Clear webapp storage when site data is cleared

chrome/browser/browsing_data/browsing_data_remover.cc

Index: chrome/browser/browsing_data/browsing_data_remover.cc
diff --git a/chrome/browser/browsing_data/browsing_data_remover.cc b/chrome/browser/browsing_data/browsing_data_remover.cc
index 12f3277708054a61f69dc3a4e5c6aa0a12d2e2d4..e31fffc70b6804f81a3e0a468f32111cd5f6f7f6 100644
--- a/chrome/browser/browsing_data/browsing_data_remover.cc
+++ b/chrome/browser/browsing_data/browsing_data_remover.cc
@@ -71,6 +71,7 @@
 #include "url/origin.h"
 
 #if defined(OS_ANDROID)
+#include "chrome/browser/android/webapps/webapp_registry.h"
 #include "chrome/browser/precache/precache_manager_factory.h"
 #include "components/precache/content/precache_manager.h"
 #endif
@@ -760,6 +761,18 @@ void BrowsingDataRemover::RemoveImpl(int remove_mask,
     }
   }
 
+#if defined(OS_ANDROID)
+  if (remove_mask & REMOVE_WEBAPP_DATA) {
+    waiting_for_clear_webapp_data_ = true;
+    BrowserThread::PostTask(
+        BrowserThread::IO,
+        FROM_HERE,
+        base::Bind(&WebappRegistry::CleanupWebappsOnIOThread,

[mlamouri (slow - plz ping), 2015/09/08 10:03:00]

nit: I would call the method ClearWebapps... or DeleteWebapps... or
UnregisterWebapps...

[Lalit Maganti, 2015/09/08 10:44:28]

Gone with Unregister to match Java.

+                   base::Bind(&BrowsingDataRemover::OnClearedWebappData,
+                              base::Unretained(this))));
+  }
+#endif
+
   // Record the combined deletion of cookies and cache.
   CookieOrCacheDeletionChoice choice = NEITHER_COOKIES_NOR_CACHE;
   if (remove_mask & REMOVE_COOKIES &&
@@ -840,6 +853,7 @@ bool BrowsingDataRemover::AllDone() {
          !waiting_for_clear_pnacl_cache_ &&
 #if defined(OS_ANDROID)
          !waiting_for_clear_precache_history_ &&
+         !waiting_for_clear_webapp_data_ &&
 #endif
 #if defined(ENABLE_WEBRTC)
          !waiting_for_clear_webrtc_logs_ &&
@@ -1132,6 +1146,12 @@ void BrowsingDataRemover::OnClearedPrecacheHistory() {
   waiting_for_clear_precache_history_ = false;
   NotifyAndDeleteIfDone();
 }
+
+void BrowsingDataRemover::OnClearedWebappData() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+  waiting_for_clear_webapp_data_ = false;
+  NotifyAndDeleteIfDone();
+}
 #endif
 
 void BrowsingDataRemover::OnClearedDomainReliabilityMonitor() {